EP0718834A3 - Optical data carrier and reading apparatus for such a data carrier - Google Patents

Optical data carrier and reading apparatus for such a data carrier Download PDF

Info

Publication number
EP0718834A3
EP0718834A3 EP95119825A EP95119825A EP0718834A3 EP 0718834 A3 EP0718834 A3 EP 0718834A3 EP 95119825 A EP95119825 A EP 95119825A EP 95119825 A EP95119825 A EP 95119825A EP 0718834 A3 EP0718834 A3 EP 0718834A3
Authority
EP
European Patent Office
Prior art keywords
data carrier
reading apparatus
optical data
bit sequence
diffraction pattern
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP95119825A
Other languages
German (de)
French (fr)
Other versions
EP0718834A2 (en
EP0718834B1 (en
Inventor
Wayne R. Tompkin
René Staub
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
OVD Kinegram AG
Original Assignee
Landis and Gyr Technology Innovation AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Landis and Gyr Technology Innovation AG filed Critical Landis and Gyr Technology Innovation AG
Publication of EP0718834A2 publication Critical patent/EP0718834A2/en
Publication of EP0718834A3 publication Critical patent/EP0718834A3/en
Application granted granted Critical
Publication of EP0718834B1 publication Critical patent/EP0718834B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
    • G11B23/28—Indicating or preventing prior or unauthorised use, e.g. cassettes with sealing or locking means, write-protect devices for discs
    • G11B23/283—Security features, e.g. digital codes
    • G11B23/284—Security features, e.g. digital codes on the record carrier
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/26—Processes or apparatus specially adapted to produce multiple sub- holograms or to obtain images from them, e.g. multicolour technique
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/06009—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code with optically detectable marking
    • G06K19/06046—Constructional details
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/08—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code using markings of different kinds or more than one marking of the same kind in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means
    • G06K19/10—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code using markings of different kinds or more than one marking of the same kind in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means at least one kind of marking being used for authentication, e.g. of credit or identity cards
    • G06K19/16—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code using markings of different kinds or more than one marking of the same kind in the same record carrier, e.g. one marking being sensed by optical and the other by magnetic means at least one kind of marking being used for authentication, e.g. of credit or identity cards the marking being a hologram or diffraction grating
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • G11B7/005—Reproducing
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/004—Recording, reproducing or erasing methods; Read, write or erase circuits therefor
    • G11B7/0065—Recording, reproducing or erasing by using optical interference patterns, e.g. holograms
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/12—Heads, e.g. forming of the optical beam spot or modulation of the optical beam
    • G11B7/13—Optical detectors therefor
    • G11B7/131—Arrangement of detectors in a multiple array
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/2403—Layers; Shape, structure or physical properties thereof
    • G11B7/24035—Recording layers
    • G11B7/24044—Recording layers for storing optical interference patterns, e.g. holograms; for storing data in three dimensions, e.g. volume storage
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
    • G11B7/2407—Tracks or pits; Shape, structure or physical properties thereof
    • G11B7/24085—Pits
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/02—Details of features involved during the holographic process; Replication of holograms without interference recording
    • G03H1/024—Hologram nature or properties
    • G03H1/0244—Surface relief holograms
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/04—Processes or apparatus for producing holograms
    • G03H1/18—Particular processing of hologram record carriers, e.g. for obtaining blazed holograms
    • G03H1/182—Post-exposure processing, e.g. latensification
    • G03H2001/183—Erasing the holographic information
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B7/002—Recording, reproducing or erasing systems characterised by the shape or form of the carrier
    • G11B7/0033—Recording, reproducing or erasing systems characterised by the shape or form of the carrier with cards or other card-like flat carriers, e.g. flat sheets of optical film

Abstract

The optical data carrier (1) has diffraction patterns (2) arranged along at least one data track, each diffraction pattern representing a bit sequence with a given number of bits. A light beam (10) directed onto each diffraction pattern is divided into partial beams (11, 12), corresponding to the different bits of the bit sequence, with the intensity of each partial beam detected to determine the bit value. The number of diffraction patterns is a whole power of 2.
EP95119825A 1994-12-22 1995-12-15 Optical data carrier and reading apparatus for such a data carrier Expired - Lifetime EP0718834B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH3883/94 1994-12-22
CH388394 1994-12-22
CH388394 1994-12-22

Publications (3)

Publication Number Publication Date
EP0718834A2 EP0718834A2 (en) 1996-06-26
EP0718834A3 true EP0718834A3 (en) 1999-04-14
EP0718834B1 EP0718834B1 (en) 2003-12-17

Family

ID=4265554

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95119825A Expired - Lifetime EP0718834B1 (en) 1994-12-22 1995-12-15 Optical data carrier and reading apparatus for such a data carrier

Country Status (4)

Country Link
US (2) US5754520A (en)
EP (1) EP0718834B1 (en)
AT (1) ATE256897T1 (en)
DE (1) DE59510849D1 (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5754520A (en) * 1994-12-22 1998-05-19 Landis & Gyr Technology Innovation Ag Optical data carriers and reading devices therefor
US6060143A (en) * 1996-11-14 2000-05-09 Ovd Kinegram Ag Optical information carrier
CH693693A5 (en) * 1997-06-06 2003-12-15 Ovd Kinegram Ag An apparatus for detecting optical diffraction markings.
JPH11195245A (en) * 1997-12-26 1999-07-21 Victor Co Of Japan Ltd Optical recording medium and information reader therefor
US6669084B1 (en) * 1998-12-17 2003-12-30 International Business Machines Corporation Optical transaction card
HUP0000518D0 (en) * 2000-02-04 2000-04-28 Method of placing data signals onto a carrier; method and apparatus for the holographic recording and read-out of data
US6879556B2 (en) * 2002-02-12 2005-04-12 Iomega Corporation Method and apparatus for optical data storage
US20040175843A1 (en) * 2003-03-04 2004-09-09 Roitman Daniel B. Near-field and far-field encoding and shaping of microbeads for bioassays
US7218589B2 (en) * 2003-11-24 2007-05-15 General Electric Company Authenticable optical disc, system for authenticating an optical disc and method thereof
ES2332393B2 (en) * 2007-04-12 2010-06-23 Universidad De Granada OPTICAL METHOD AND APPARATUS FOR THE DETECTION OF COPIES PIRATES OF CDS.
JP2008299912A (en) * 2007-05-29 2008-12-11 Hitachi Global Storage Technologies Netherlands Bv Hard disk media with pattern for alignment, and alignment method
CN101796586A (en) * 2007-08-31 2010-08-04 皇家飞利浦电子股份有限公司 An optical disc comprising a watermark and a method and recorder for recording such a disc
JP6278552B2 (en) * 2013-08-02 2018-02-14 日本発條株式会社 Precious metal authenticity judgment structure and precious metal authenticity judgment method
EP3163479B1 (en) * 2015-10-27 2023-10-18 Fresenius Medical Care Deutschland GmbH Reusable disposable and dialysis apparatus therefore

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4211918A (en) * 1977-06-21 1980-07-08 Lgz Landis & Gyr Zug Ag Method and device for identifying documents
EP0075674A2 (en) * 1981-09-10 1983-04-06 LGZ LANDIS & GYR ZUG AG Synthetically manufactured and machine-readable optical validity marks for security documents
JPS61134946A (en) * 1984-12-06 1986-06-23 Canon Inc Optical information recording medium
EP0215187A1 (en) * 1985-08-21 1987-03-25 Landis & Gyr Betriebs AG Method and apparatus for validating and cancelling value units on papers of value
JPH0550788A (en) * 1991-08-22 1993-03-02 Toppan Printing Co Ltd Card and card reader
EP0551753A1 (en) * 1992-01-17 1993-07-21 Pioneer Electronic Corporation Optical recording medium, apparatus for reproducing the same and method of recording and reproducing the same
EP0552887A1 (en) * 1992-01-20 1993-07-28 Pioneer Electronic Corporation Recording medium and information recording and reproducing apparatus therefor
EP0613126A1 (en) * 1992-08-28 1994-08-31 Toppan Printing Co., Ltd. Optical information recording medium and method of reading the same information

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3323007C1 (en) * 1983-06-25 1984-06-28 Deutsche Thomson-Brandt Gmbh, 7730 Villingen-Schwenningen Tracking system with an optical pickup for an audio or video disc player
JPS6383931A (en) * 1986-09-27 1988-04-14 Toshiba Corp Light emitting element
JP2612329B2 (en) * 1988-12-27 1997-05-21 シャープ株式会社 Optical memory element and optical memory reproducing device
DE69024959T2 (en) * 1990-10-30 1996-11-14 Ibm Integrated optical head structure
US5754520A (en) * 1994-12-22 1998-05-19 Landis & Gyr Technology Innovation Ag Optical data carriers and reading devices therefor

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4211918A (en) * 1977-06-21 1980-07-08 Lgz Landis & Gyr Zug Ag Method and device for identifying documents
EP0075674A2 (en) * 1981-09-10 1983-04-06 LGZ LANDIS & GYR ZUG AG Synthetically manufactured and machine-readable optical validity marks for security documents
JPS61134946A (en) * 1984-12-06 1986-06-23 Canon Inc Optical information recording medium
EP0215187A1 (en) * 1985-08-21 1987-03-25 Landis & Gyr Betriebs AG Method and apparatus for validating and cancelling value units on papers of value
JPH0550788A (en) * 1991-08-22 1993-03-02 Toppan Printing Co Ltd Card and card reader
EP0551753A1 (en) * 1992-01-17 1993-07-21 Pioneer Electronic Corporation Optical recording medium, apparatus for reproducing the same and method of recording and reproducing the same
EP0552887A1 (en) * 1992-01-20 1993-07-28 Pioneer Electronic Corporation Recording medium and information recording and reproducing apparatus therefor
EP0613126A1 (en) * 1992-08-28 1994-08-31 Toppan Printing Co., Ltd. Optical information recording medium and method of reading the same information

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 010, no. 330 (P - 514) 11 November 1986 (1986-11-11) *
PATENT ABSTRACTS OF JAPAN vol. 17, no. 358 (M - 1440) 2 March 1993 (1993-03-02) *

Also Published As

Publication number Publication date
US5754520A (en) 1998-05-19
DE59510849D1 (en) 2004-01-29
ATE256897T1 (en) 2004-01-15
EP0718834A2 (en) 1996-06-26
EP0718834B1 (en) 2003-12-17
US5875170A (en) 1999-02-23

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